(57) A biomedical centrifuge having a rotor in the form of a body (1) having rotational
symmetry wherein, from a surface area thereof, cavities (3,4,5) are provided which
accommodate substantially cylindrical vessels. Said cavities (3,4,5) - as viewed in
a plane normal to the axis of rotation of the rotor - are located at the angular points
of a regular polygon. There is also provided a motor for rotating the rotor at a speed
of many tens of thousands r.p.m. The rotor body consists of a cap-shaped skeleton
(1) of synthetic plastics material and the cavities (3,4,5) are provided in the plastics
material and the skeleton for the rest is substantially hollow. On the periphery,
the skeleton is surrounded by reinforcing rings (7,8,9,10) or a reinforcing envelope
consisting of substantially tangentially oriented long fibres of suitable material.
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